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U4

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#U4

Description

Australia AS U4 Australia Structural steel and U4 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Structure Steel: U4
Category Type Steel Grade Standard Country Application
Steel GradesStructure Steel U4 AS Australia Australia Structural steel
M1040
X1315
X1320
X1325
1340
X1340
X1345
U1
U3
3

Chemical composition(mass fraction)(wt.%) of the U4

C(％) Si(％) Mn(％) P(％) S(％)
0.25-0.38 Max 0.40 0.40-1.00 0.04 0.040

Mechanical Properties of steel grade U4

Yield
Rp0.2 (MPa)		 Tensile
Rm (MPa)		 Impact
KV/Ku (J)		 Elongation
A (%)		 Reduction in cross section on fracture
Z (%)		 As-Heat-Treated Condition Brinell hardness (HBW)
824 (≥) 786 (≥) 34 42 42 Solution and Aging, Annealing, Ausaging, Q+T,etc 332

Physical Properties of steel grade U4

Temperature
(°C)		 Modulus of elasticity
(GPa)		 Mean coefficient of thermal expansion 10-6/(°C) between 20(°C) and Thermal conductivity
(W/m·°C)		 Specific thermal capacity
(J/kg·°C)		 Specific electrical resistivity
(Ω mm²/m)		 Density
(kg/dm³)		 Poisson’s coefficient, ν
23 - -     0.33 -  
643 816 - 33.3 412   -  
181 - 31 14.2   233 243

Heat Treatment of steel grade U4

Heat treated : 1363°C - 1318°C

Technological Curves of steel grade U4

Cross Reference Table (Equivalent Grade) of U4

Grade Standard Country Application
SU41 SS Sweden Carbide for cutting tools
SU41 SS Sweden Carbide for cutting tools
U4 AS Australia Australia Structural steel
U40048 GBT China China structural steel and alloy steel
U40088 GBT China China structural steel and alloy steel
U40108 GBT China China structural steel and alloy steel
U40158 GBT China China structural steel and alloy steel
U40152 GBT China China structural steel and alloy steel
U40208 GBT China China structural steel and alloy steel
U40202 GBT China China structural steel and alloy steel
U41188 GBT China China structural steel and alloy steel
U41228 GBT China China structural steel and alloy steel
U40252 GBT China China structural steel and alloy steel
U40302 GBT China China structural steel and alloy steel
U40352 GBT China China structural steel and alloy steel
U40402 GBT China China structural steel and alloy steel
U40452 GBT China China structural steel and alloy steel
U41252 GBT China China structural steel and alloy steel
U41302 GBT China China structural steel and alloy steel
U41352 GBT China China structural steel and alloy steel
3 4
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